baber/WOPTO huggingface dataset:
Patent GB-1041372-A (GB)
Title: Improvements in or relating to magnetic field compensation
IPC: G01R33/07
Filed: 1963-06-04
Abstract: 1,041,372. Hall effect devices. CANADAIR Ltd. June 4, 1963 [Jan. 14, 1963], No. 22247/63. Heading H1K. [Also in Division G1] A magnetic anomaly detector system comprises means for supplying an output to a magnetometer to compensate for the effect of an interfering magnetic field on the field detector coil; the means consists of an adjustable Hall device with a magnetic field concentrator which may consist of two high permeability rods adjacent the Hall wafer. The compensating output from the Hall device may be applied to the main detector coil or to an auxiliary coil. Fig. 5 shows an arrangement with two Hall generators 100, 101, each with concentrator rods 105, 106 arranged to be sensitive to the horizontal and vertical components of the interfering magnetic field. The output of the Hall generators are connected through variable resistors to coils 107, 108, 109 which provide the compensating magnetic fields for the magnetometer. A third Hall generator with concentrators aligned normal to those shown in Fig. 5 may also be provided. Adjustment may be effected by varying the supply currents applied to the Hall generators instead of the Hall outputs. Reference is made to the use of the system for locating a submarine and also to the possibility of supplying the D.C. current for the Hall generator via a coil surrounding the concentrator to compensate for the unwanted magnetic component produced by the supply circuit, and via temperature sensitive resistors to compensate for the effect of temperature variations.
Patent GB-1281278-A (GB)
Title: Manufacture of chlorinated hydrocarbons
IPC: C07C17/25
Filed: 1970-05-08
Abstract: 1281278 Dehydrochlorination process ICI AUSTRALIA Ltd 8 May 1970 [29 May 1969] 22346/70 Heading C2C Chlorinated alkenes, e.g. trichloroethylene and perchloroethylene, are prepared by dehydrochlorination of asymmetrically polychlorinated alkanes under substantially anhydrous conditions using as catalyst a solution of ferric chloride or ferric bromide in a 1-vitro alkane having 1 to 6 carbon atoms. Reaction is preferably effected continuously in a distillation column. The feedstock may be obtained by chlorination of ethylene.
Patent GB-426866-A (GB)
Title: A light-sensitive photographic material
IPC: G03C1/04
Filed: 1933-08-10
Abstract: In the production of photographic material, polyacrylic acid is treated with triethanolamine in aqueous solution.
Patent GB-274670-A (GB)
Title: Improvements in or relating to bowden wire or like controlling or operating means
IPC: B62M25/04
Filed: 1926-09-11
Abstract: 274,670. Wilson, F. M. Sept. 11, 1926. Control mechanism. - In Bowden and like control devices for use on motor cycle etc; handle bars &c., the cable b is secured to a drum, sleeve or the like a attached to or forming part of a twist grip sleeve a<1> and therefrom is led over a guide pulley c, the axes of the guide pulley and rotary sleeve being at right angles. The two axes may be in the same plane, the guide pulley being mounted on a bolt passing through the handle bar. In the form shown, however, the pulley c is offset, being mounted in conjunction with a second, independent Bowden control device e upon a bolt clamping a supporting bracket g<1> to the handle bar d, an adjustable retaining spring being provided under the cover washer g<2>. The twist grip sleeve may be controlled in position by a spring k, Fig. 3. It may also rotate between stops and be provided with a pointer moving over a scale to indicate extent of throttle opening &c.
Patent GB-699618-A (GB)
Title: Improvements in and relating to fluid cooling systems
IPC: F24F11/08
Filed: 1952-09-08
Abstract: 699,618. Air-conditioning. GENERAL ELECTRIC CO. Sept. 8, 1952 [Sept. 8, 1951], No. 22539/52. Class 137 [Also in Group XIII] In a system for air-conditioning by refrigeration, liquid refrigerant from a receiver 27 passes through a cooling chamber 33 to a distributer 34 from which it flows in 'parallel through restrictor tubes 35 and evaporator sections 24, refrigerant also passing through a by-pass pipe 38, and a restrictor tube 39 to an expansion coil 40 in the chamber 33, the vaporized refrigerant then flowing by pipe 41 to the evaporator. By adjusting the rate of flow of refrigerant through the by-pass, the degree of cooling in chamber 33 can be altered and hence the amount of liquid refrigerant supplied to the evaporators can be regulated. As shown, the air from a room 13 is controllabw mixed with fresh air, drawn through a filter 23 and over the evaporators 24 and supplied to the room through a pipe 12 by a fan 20. The compressor motor 28 and the condenser fan motor 31 are controlled by a thermalresponsive element 43 in the room and the supply of refrigerant to expansion coil 40 is regulated by supplying, to a part 62 of pipe 38, heat from a coil 57, the energy to which can be set by a rheostat 61. Alternatively, a switch 58, 59 can be moved to the position shown, whereupon, as long as the compressor motor is energized by theirmal element 43, no energy is supplied to coil 57 and the maximum cooling cccurs in chamber 33. When element 43 is satisfied, a humidistat 70 and a thermal element 72 are operative to energize the compressor motor and to supply energy to the coil 57 so that a reduced supply of refrigerant passes to evaporators 24. Refrigeration is stopped either when the temperature reaches a pre-determined minimum or when the relative humidity has reached the required value.
Patent GB-1287357-A (GB)
Title: A process for assembling a panel structure, for example a railing for a balcony, gallery, or the like, and a panel structure assembled by that process
IPC: E04F11/18
Filed: 1970-05-11
Abstract: 1287357 Making fencing, gates and railings 11 May 1970 [12 May 1969] 22568/70 Heading B3A [Also in Division E1] A method of assembling a panel structure, e.g. balcony, gallery or like railing, comprises subjecting a corrugated sheet 3 to a tensile force transversely of its corrugations, inserting the edges of the expanded sheet into channels formed in rails 1, (2), removing the tensile force so that the peaks of the corrugations press resiliently against flanges 4 of the rails and are gripped thereby, see also Fig. 1 (not shown). The corrugations, which may be of trapezoidal or undulating wave form in cross-section, have grooves 5 formed in their peaks, which engage lips 6 of the flanges 4. Prior to corrugating and groove forming, the sheet may be given a coat of paint or other surface coating by spraying or dipping. Instead of the grooves 5, the corrugations may have thickened crests, which engage in grooves in the flanges of the channel sections. The panel structure may be used for fencing, including movable crowd fencing, gates or building panels. In the latter case the ends of the panels will be provided with channel sections to form a rectangular framework for the corrugated sheet and the retaining means 5, 6 may be dispensed with. The rails 1, (2) may be of aluminium, plastics or other material that does not require painting.
Patent GB-1507164-A (GB)
Title: Apparatus for purifying gases
IPC: F01N3/28
Filed: 1975-05-23
Abstract: 1507164 Purification of I.C. exhaust ENGELHARD MINERALS & CHEMICALS CORP 23 May 1975 [10 June 1974] 22740/75 Addition to 1484933 Heading B1F Apparatus for purifying gases, e.g. for catalytic conversion of I.C. exhausts. comprises a ceramic honeycomb structure 28, a flange 44 bridging the gap between casing 22 and structure 28, and at least one expansible ceramic fibre member 48a, 48b positioned under compression to provide resilient connection between flange 44 and structure 28. Member 48a, 48b may be formed of alumina silica fibre, and portion 48b may be more resilient than member 48a.
Patent GB-682062-A (GB)
Title: Improvements in colour photography
IPC: G03C7/00
Filed: 1947-08-18
Abstract: 682,062. Colour photography. FRAUNHOFER, H. VON, and COOTE, H. E. Aug. 16, 1948 [Aug. 18, 1947; Aug. 21, 1947], Nos. 22873/47 and 23198/47. Class 98 (ii). In a colour photographic printing process two coloured images are produced in two layers of a negative material having three superimposed silver halide emulsion layers by means of colour formers present in two of these layers and a black and white image is produced in the third layer, the latter image is printed onto a duplicating material and then obliterated from the negative, the two coloured images are printed onto two layers of a positive material having three superimposed differentially sensitized silver halide emulsion layers containing colour formers, and the duplicate image is printed onto the third layer of the positive by light to which the two other layers are insensitive. The third layer of the negative may be developed and printed and have its image obliterated. before 'development of the two negative colour images, or all three negative images may be developed and the third image printed and obliterated after the development, and two examples detail these alternatives; thus in example 1 a negative comprising a base having thereon successively blue sensitivemagenta colour former, green sensitive-yellow or blue-green colour former and red sensitive no colour former layers, with the normal yellow filter in conjunction with the blue sensitive layer, is exposed through the base, surface developed in a specified loaded hydroquinone developer, immersed in a stop bath and printed as with red or infra-red light onto an appropriately sensitive duplicating material; the negative is then treated in a specified colour developer, stop bath, bleaching solution and fixing bath, whereby the uppermost (silver) image is obliterated and coloured images only remain in the two lower layers, and printing is effected successively from the negative and the duplicating material onto a multilayer positive as indicated above. In example II, a negative comprising red sensitive-magenta colour former, green sensitive-blue-green colour former, yellow filter and uppermost blue sensitive-no colour former layers is exposed, colour developed, stop bathed, fixed and bleached in normal sequence, and then the silver image in the uppermost layer is restored by use of a loaded hydroquinone developer, the negative is fixed again and this silver image is printed onto a duplicating material using deep violet light; after which the image of the uppermost layer is obliterated with Farmer's reducer, and the magenta and blue-green images of the negative, and the image of the duplicating material are printed onto a positive as before. The Provisional Specifications indicate also a somewhat similar procedure which is effected by use of stripping materials in place of obliteration of the uppermost images.
Patent GB-461197-A (GB)
Title: Improvements in or relating to television apparatus
IPC: H01J31/34
Filed: 1935-08-14
Abstract: 461,197. Cathode-ray tubes. JONES, V. A., and BAIRD TELEVISION, Ltd. Aug. 14, 1935, Nos. 22901/35 and 7157/36. [Class 39 (i)] An electron image formed by an electromagnetic coil 6 or other known means from an optical image cast on a photo-electric cathode 3 is moved transversely by electric or magnetic deflecting means over an anode consisting of a line array 11 of small conducting elements forming with a common earthed element 12 a series of small condensers which are charged simultaneously by the electron image and discharged in order by a scanning cathode ray. The anode may be formed of a number of small metal plates insulated by mica and threaded on a central rod, the plates being alternately insulated from, and connected to, the rod. Alternatively, a strip of insulator maybe coated with metal divided into parallel strips by ruling, engraving or etching, the common element being formed by a metal film on the other side of the insulating strip or a second strip. The metal film may be divided into two halves at different potentials. The anode may be screened by shields with slots corresponding to a single picture line, which shields may be charged to restrict the emission of secondary electrons or collect secondary electrons emitted, in which case the shield may be used as a signal electrode. The arrangement may be such that the elements are charged positively by secondary emission and discharged directly by the cathode ray, or charged negatively by the image and discharged by secondary emission produced by the ray.
Patent GB-1038729-A (GB)
Title: New dihydroquinazolines and their preparation
Inventor: PESSON MARCEL
IPC: A61K31/505
Filed: 1964-06-03
Abstract: Novel compounds of the general formula <FORM:1038729/C2/1> and their acid addition salts, in which R is hydrogen, an alkyl or alkoxy radical containing up to 5 carbon atoms, or a halogen atom (especially chlorine), R1 is hydrogen or an alkyl radical containing up to 4 carbon atoms, R2 is an alkyl radical containing up to 4 carbon atoms, a hydroxyalkyl radical containing up to 4 carbon atoms, a cycloalkyl radical (containing 5 or 6 carbon atoms), or an amino radical, or R1 and R2 together with the adjacent nitrogen represent a saturated mononuclear heterocyclic group, especially 1-pyrrolidyl, 1-piperidyl, morpholino, or 4-alkyl- or 4-hydroxyalkyl-1-piperazinyl (the alkyl and hydroxyalkyl groups containing up to 4 carbon atoms) are prepared by condensing an amine of formula HNR1.R2 with a 2-chloro-quinazoline of the formula <FORM:1038729/C2/2> The 2-chloro-quinazolines are prepared by reacting a compound of the general formula <FORM:1038729/C2/3> with sulphur monochloride or sulphuryl chloride.  Pharmaceutical compositions, preferably in conventional form for oral or parenteral administration, comprise a compound of the first general formula above, or an acid addition salt thereof, and a pharmaceutical carrier.  They have sedative and hypnotic activity.
Patent GB-1259980-A (GB)
Title: Improvements in or relating to cylindrical roller bearings
IPC: F16C19/44
Filed: 1969-05-06
Abstract: 1,259,980. Roller bearing. SKF KUGELLAGER FABRIKEN G.m.b.H. 6 May, 1969 [7 May, 1968], No. 23085/69. Heading F2A. A needle roller bearing has a thin-walled outer race 11 having radially inwardly turned flanges 13 and 14 at each end, a set of needle rollers 12 disposed on the inner surface of the race ring, there being a pair of rings 15 and 16 each located so as to abut one of the flanges and the adjacent ends of the rollers. Sealing rings 23 and 24 may be sandwiched between the rings and the flange. The bearing may be made by inserting into a hollow cylinder having a radially inturned flange at one end, a ring, a set of needle rollers and a second ring, and then forming an inturned flange at the other end of the cylinder.
Patent GB-277020-A (GB)
Title: Electromagnet
IPC: H01H50/34
Filed: 1927-09-02
Abstract: 277,020. Schild et Cie, (Assignees of Geisslinger, J.). Sept. 3, 1926, [Convention date]. Electromagnets.-An electromagnet, particularly applicable for use in electric clocks, comprises an outer shell a an axial core b, and an armature d pivoted on the shell and forming a cover therefor. The pivot consists of a right-angled spring hinge e which acts to keep the armature in the position shown. A spindle g secured to the cone extends through a. hole d<2> in the armature and carries an adjustable nut h to regulate the play of the armature. The coil c is held between insulating discs c<1>, c<2>; these are secured by first assembling on the core, knurling the ends of the core and forcing the discs on to the ends. The support for the magnet comprises a saddle inserted in a notch in the shell, the two edges of the notch being flanged over the saddle.
Patent GB-787846-A (GB)
Title: Improvements relating to high-vacuum electric circuit-breakers
Inventor: REECE MICHAEL PETER
IPC: H01H33/664
Filed: 1954-08-09
Abstract: 787,846. High-tension switches. E.R.A. PATENTS, Ltd. Nov. 9, 1955 [Aug. 9, 1954], No. 23129/54. Class 38 (5). A high-vacuum A.C. switch has a pair of relatively-movable main current-carrying electrodes C, D and a pair of relatively-movable subsidiary electrodes L, M of a material at which the arcing voltage is greater than that of the material of the main electrodes, the electrodes and an operating mechanism being so arranged that the subsidiary electrodes open last but at the end of their separating movement lie behind the planes of the surfaces of the main electrodes so that the arc is initiated at the subsidiary electrodes and then transferred to the main electrodes. In the arrangement shown, a contact-pressure spring R is interposed between an enlarged part Q of the movable subsidiary electrode M and a stirrup P secured to an operating member K. A strong spring S is interposed between the stirrup P and a member O carrying the movable main electrode D and a weak spring T is interposed between the member 0 and the lower surface of an extension H of the envelope A. When the switch is opened the spring T is first compressed so that the electrode D is withdrawn whilst the electrodes L, M remain in contact. Then as the downward movement of the member K proceeds the spring S is compressed and the electrode M is drawn down into the position shown. Flexible connections X, Y interconnect the moving parts and glass sleeves V, W are provided at areas of sliding engagement to avoid arc-like discharges. The main electrodes may be of copper and the subsidiary electrodes of tungsten. Metal, semiconducting or high-resistance shields may be associated with the main electrodes. In an alternative arrangement the auxiliary electrodes may be sleeves surrounding the main electrodes.
Patent GB-240162-A (GB)
Title: Improvements relating to methods of signalling employing frequency multiplying transformers
IPC: H03B19/03
Filed: 1925-09-16
Abstract: 240,162. Telefunken Ges. fiir Drahtlose Telegraphie. Sept. 16, 1924, [Convention date]. Addition to 239,534, [Class 38 (ii), Electric currents, Converting &c.], and 239,872. Magnetic modulating systems.-In a method of signalling employing a frequency transformer comprising a conductor. surrounded by a thin layer of iron as described in the parent Specification, the multiplied frequency circuit II is connected to the transformer " winding " a<1>, a<2>, a<1>1, a<1>2 at the points k1, k2, at which the auxiliary magnetizing circuit, which may comprise low forequency alternating current or a telephone or key controlled battery circuit, is connected to the transformer. By this arrangement the necessity for a high inductance in the generator circuit I for eliminating from this circuit current of multiplied frequency is removed. Where, however, the condenser C1 in the circuit of the generator g is variable step by step, a small variable inductance sufficient to bridge the steps may be provided. This inductance may, however, be dispensed with by making the self inductance of the transformer windings variable. Figs. 4 and 5 show alternative arrangements in which the four limbed transformer shown in Fig. 3 is replaced by one consisting of two limbs.
Patent GB-924546-A (GB)
Title: Dry composition producing heat when mixed with water
IPC: C09K5/16
Filed: 1961-06-27
Abstract: A composition producing heat when mixed with water comprises a finely divided alkali metal hydroxide and a minor proportion by weight, preferably 2 to 10%, of aluminium particles of substantially uniform size between 40 and 1000 particles per gram, the particles having smooth surfaces.  Preferred particles are those having uniform cross-section along a central axis, e.g. wire cuttings.  The composition may also contain an oxidizing agent such as sodium nitrate.
Patent GB-614838-A (GB)
Title: Improvements in or relating to trimming machines for use in the manufacture of shoes
IPC: A43D63/00
Filed: 1946-08-03
Abstract: 614,838. Trimming machines for shoe uppers and soles. BRITISH UNITED SHOE MACHINERY CO., Ltd. (United Shoe Machinery Corporation). Aug. 3, 1946, No. 23201. [Class 17 (i)] A work-engaging device rotatable in the direction of work feed bears against portions of the work, such as of the out-turned flange of a stitch-down shoe, just before they are engaged by work-guiding means, during feed of the work, to facilitate their progress through a trimming machine. The work-engaging device is preferably power driven and of conical shape at its operative end with roughened surface, and bears against a flange of the shoe upper overlying the margin of a sole, in the crease of which the workguiding means is engaged. The invention is described as applied to a rounding machine generally similar to a Goodyear Universal Rounding and Channelling Machine, Model E, without means for varying the width of the trimmed sole margin or of channelling the sole and comprises a head 22, supported on a column 20, and carrying work-engaging and operating members. A stationary guide 24 of U-form is adjustably secured to the upper forward portion of the head, by slot and screw connections 26, to engage the shoe crease. A rounding knife 36 is fixed in the forward end of a slide 34 mounted to reciprocate in horizontal guides in the machine head and the outer edge of the knife cuts against an anvil set in the work-engaging face of one, 30, of a pair of feed members 30, 78, which overlies the margin of the shoe sole, the other 78 forming a resiliently mounted angularly adjustable shoe bottom rest engaging the tread surface of the sole. The feed members have work engaging faces of converging nature and by their respective driving eccentrics 60, 122 (not shown) one member 78 is moved more rapidly than the other 30 in the direction of feed. Two co-operating cam members which are moved simultaneously in opposite directions reduce the periods during which movement of the feed members 30, 78 has to be interrupted to grip and release the work. The work-engaging device comprises a spindle 174 rotatably mounted in a bearing member 170 between collars 176 so as to permit some freedom of movement and not adversely affect the positioning of the shoe by the crease guide 24. Shanks 164, 168 on which the spindle 174 is adjustably mounted may be varied in position both longitudinally and angularly so that the conical roughened end 179 may be adjusted in position close to the guide 24 with its axis upwardly and rearwardly inclined. The spindle 174 is driven by a pulley and belt drive from a shaft 62. The margin of the sole and the curved surface of the spindle 179 form a converging throat which smooths out unevenness in the flange of the shoe upper and permits its free passage to the crease guide 24.